Disk-sharpener



. PATENTED JAN. 5, 1904. F. MELVIN & E. BRUSSEAU.

DISK SHARPENER.

7 APPLICATION FILED SEPT. 21, 1903.

N0 MODEL.

t 6-474" I!! 'II &

No. waves.

UNITED STATES Patented January 5, 1904.

PATENT OFFICE,

FRED MELVIN AND EDWARD BRUSSEAU, OF JEFFERSON, SOUTH DAKOTA, ASSIGNORSOF ONE-HALF TO PHILIP BERNARD AND WILL R. MELVIN,

OF JEFFERSON, SOUTH DAKOTA.

DISK-SHARPENERQ SPECIFICATION forming part of Letters Patent No.748,768, dated January 5,1904. Application filed September 21, 1903.Serial No. 174,070. (No model.)

To aZZ whom it may concern.-

Be it known that we, FRED MELVIN and EDWARD BRUSSEAU, citizens of theUnited States, residing at Jefferson, in the county of Union and Stateof South Dakota, have invented a new and useful Disk-Sharpener, of whichthe following is a specification.

This invention relates to that class of disksharpeners which consists ofholding devices ro serving to support disks, such as are com.-'

monly used in various agricultural implements, adjustably and revolublywhile such disks are being exposed to the grinding action of agrindstone or emery-wheel.

I 5 The invention has for its object to provide a device of this classwhich shall consist of but few parts,w'hich may beconvenientlyconnected'or put together for operation, which shall be ofsuch a nature that the disk which is to be operated upon may be easilyand quickly connected therewith,the construction of which shall be suchas to admit of the use of the device in connection with disks of varioussizes and shapes, and which, generally speaking, shall be simple,durable, and efficient.

With these and other ends in View the invention consists in the improvedconstruction, arrangement, and combination of parts, 0 which will behereinafter fully described, and

particularly pointed out in the claims.

In the accompanying drawings, Figure 1 is a perspective view showing ourimproved disk-sharpening device in position for opera- 3 5 tion, thedisk being indicated in dotted lines. Fig. 2 is a longitudinal verticalsectional view of a device with the disk mounted in position and shownin full lines. Fig. 3 is a perspective view illustrating a modified'form. of one 0 of the members of our improved disk-sharpening device.

Corresponding parts in the several figures are indicated by similarnumerals-of reference.

' 4 5 1 designates a base or pedestal provided at its lower edge with aflange 2, having perforations 3 to receive screws or bolts, by means ofwhich the said base may be connected with a supporting-bench 4. The baseor pedestal at its upper end has a recess or socket 5 to re- .ceive aspindle 6, depending from a laterallyextending bracket or frame '7,having at its outer end a cylindrical boxing 8, from which a handle 9extends in an outward direction. The bore 10 of the cylindrical boxingis for the reception of a spindle 11, formed at the apex of a conical orfunnel-shaped member 12, against the rim or edge of which the disk 13which is to be operated upon is placed, said disk being secured inposition by means of a rod or shaft 14. The. latter is provided with aflange 15, which bears against the inner side of the funnel-shapedmember 12. Said shaft extends through a bore 16 in the spindle 11 and isthreaded at its rear end for the reception of a nut 17, by means ofwhich the shaft 14 is mounted in said spindle and which also serves tosecure the spindle 11 in its boxing 8. It will be observed that thespindle 11 is of a length slightly exceeding that of the boxing 8, sothat when the nut 17 is screwed down tightly against the end of thespindle 11 the latter may still freely rotate in the boxing 8.

The shaft 14 is extended in front of the flange15, as shown at 18, andthe extension 18 is threaded at its front end, as indicated at 19, forthe'reception of a crank 20, having a handle 21, whereby it may bemanipulated. The inner end of the crank 20 has a rounded, 8o reinforced,ordisk-shaped member 22, which is adapted to bear against the front sideof the disk which is being operated upon, thereby mounting and holdingthe said disk securely with relation to the funnel -shaped member 12.

The operation of this device will be readily understood. In order toplace the disk in position for being operated upon by a grindstone oremery-wheel, the crank 20 is removed from the projecting end of theshaft or spindle, the disk is mounted upon the said stem or projectingportion 18 and centered with relation to the funnel-shaped member 12,after which the crank is replaced, with the disk or 5 button 22 pressingagainst the dished side of the disk 13, which latter is thereby retainedsecurely in position. After the crank has been tightened sufficiently itmay be rotated to cause the rotation of the funnel-shaped mo member 12by its spindle 11 in the boxing 8, the bracket carrying said boxingbeing axially revoluble upon the approximately vertical spindle 6. Itwill thus be seen that by placing the bench upon the devices mounted inproximity to the grindstone or emerywheel the bracket 7 may be swunginto position to cause the edge of the disk to be engaged by the saidgrinding-wheel, with which it may be held in contact with any desireddegree of pressure applied to the arm 9. The disk thus exposed to thegrinding action of the grinding-wheel may be rotated by means of thecrank 20, so as to expose all parts of its periphery equally to thegrinding action of such wheel.

In Fig. 3 of the drawings there is illustrated a modification ofourinvention which consists in substituting for the funnel-shaped member12 a member having a plurality of prongs 25, extending from a spindle11, which is longitudinally perforated, as shown at 16 for the passageof the shaft 14 and its related parts. It is thought that sometimes thedisk may be more readily centered and properly adjusted against thepoints of the fork members 25 than against a complete funnel-shapedmember having a continuous rim.

We desire it to be understood that we do not necessarily limit ourselvesto the precise structural details shown and described in the foregoingdescription,but reserve to ourselves the right to anychanges andmodifications within the scope of our invention which may be resorted towithout departing from the spirit or sacrificing the utility of thesame.

Having thus described our invention, we claim- 4 1. In a device of theclass described, a socketed base, a laterally-extending bracket memberhaving a pintle engaging said base and provided with a boxing having anoutwardly-extending handle and a disk-holding member revoluble in saidboxing.

2. In a device of the class described, a socketed base member, alaterally-extending bracket member having a pintle engaging the socketedbase and provided with a boxing and with an arm extending outwardly fromthe latter, a disk-holding member having a spindle seated in saidsocket, and means for connecting said socket and disk-holding memberwith a disk to be operated upon.

3. In a device of the class described, a socketed base, alaterally-extending bracket member, a boxing and a handle member supported by said bracket member, a disk-holding member having alongitudinally-perforated spindle journaled in said boxing and a shaftextending through said spindle and having a flange bearing against thedisk-holding member, and a nut bearing against the spindle andsupporting the latter revolubly in the boxing.

4. In a device of the class described, a bracket member supporting aboxing and a handle, said bracket member being provided with a pintle,wherebyit is supported revoluoly, a disk-holding member journaled in theboxing of the bracket member, a stem connected with said disk-holdingmember, and a crank mounted upon said stern and adapted to bear againstthe face of the disk and to press against the same to support it uponthe disk-holding member.

5. In a device of the class described, a disk-holding memberhavingalongitudinallyperforated spindle revolubly supported, a shaft extendingthrough the spindle and diskholding member and having a flange bearingagainst the inner side of the latter and screwthreaded ends, a nutmounted upon the rear end of the shaft and bearing against the rear endof the spindle, forcing the collar upon the shaft into contact with thedisk-carrying member, and means for clamping the disk to be sharpenedupon the screw-threaded front end of the shaft against the disk-holdingmember.

6. In a device of the class described, a bracket member having adownward-extending pintle and carrying at its outer end a boxing and ahandle, means for rotatably supporting the said bracket member and adiskholding member, having a longitudinallyperforated spindle journaledin said boxing, a shaft having a flange interiorly engaging the spindleof the disk-holding member and provided at its rear end with a nutengaging the rear end of said spindle, a stem extendin g forwardly fromsaid shaft beyond the face of the disk holding member, and adiskclamping device engaging said stem and having an operating crank andhandle.

In testimony that we claim the foregoing as our own we have heretoaffixed our signatures in the presence of two witnesses.

FRED MELVIN.

EDWARD BRUSSEAU.

Witnesses:

C. R. LANCASTER, MIL'I HAVILAND.

